How does this sound? ( I borrowed some words from Didi - thanks)
*Dear *****,
You have been on my mind a lot lately, and I feel really strongly that I’m being led to teach you about something that you may be unaware of. I know that you and ***** have been struggling so much with trying to have a baby - and while ***** and I haven’t been trying nearly as long, I can kind of understand how hard it is to feel such a strong desire for something that seems to be out of your control. I know that going ahead with fertility treatments (namely, IVF) seems like a way to make your dream to be parents a reality, but I hope you will consider some really serious issues that go along with that choice.
There are so many reasons this technique is sinful and harmful.
First, the child is conceived outside of the marital act. The sperm is collected outside the marital act in a manner that goes against the church’s teaching.
Once the eggs are fertilized by the sperm, life begins. Yet a scientist decides which of these fertilized eggs will be implanted and which will die. Sometimes some of the extra little people are frozen for possible future use.
Then, if too many of the embryos implant, the doctor will likely suggest that they remove some embryos so the others will have a better chance (selective abortion). In this case, the doctor decided who will live and who will die.
In-Vitro is a technique that is condemned by the Catholic church, but there are other fertility treatments that keep in line with doing things in a way that doesn’t destroy or bring harm to the newly conceived embryos.
Here are a few links, including one for the Pope Paul institute that is a fertility institute using only methods that are fully compatible with the church.
usccb.org/prolife/issues/nfp/treatment.htm
catholicinsight.com/online/church/vatican/article_475.shtml
popepaulvi.com/
I hope that you are not upset with me for bringing this up - it has just been stirring in my heart almost constantly since you first mentioned it to me and I knew that God was leading me to talk to you about it. Obviously you are dear to me and your friendship means so much, and I wouldn’t have considered telling you all this if I thought you weren’t fully devoted to your faith - but I know that you and ***** both are a beautiful Christian, Catholic couple who always strive to follow Christ! I will be praying for you guys, as I know that you have been through such difficulty with all of this! Please know that I love you (and always will!) and ultimately want you to follow your heart

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